Excavation Safety 1

Which of these two pictures shows an open cut excavation?

PICTURE A

PICTURE B.

Which one of these two pictures shows a trench?

PICTURE A

PICTURE B

What are the dangers of trenching and excavations operations?

OSHA standard 1926 is Safety and Health Regulations for Construction. With OSHA 1926, what subpart covers trenching and excavations?

What are effective ways to determine soil classifications?

Choose ALL that are correct.  

Which of the following is a sure responsibility of the competent person (in excavation)?

It typically takes utility locator services about 2-3 days to respond to a request. What number does the excavator need to call to locate underground utility lines during excavation work – anywhere in the US?

Benching, Sloping, Shoring and Shielding are the most effective ways to protect workers from cave-ins. (True/False)

(Helpful hint: Remember these protective system names. You will need to know them later in this quiz.)

At least how far from the edge of the excavations should materials or equipment be stored?

During excavation, at what depth is atmospheric testing required where hazards could reasonably be expected? (Note: This means a multi-gas detector “sniffer” will need to be used.)

Fill in the blanks. 

How often should the excavation site be inspected for possible cave-ins, indications of failure in protective systems, hazardous atmospheres, and other hazardous conditions?

High-visibility clothing is a requirement when exposed to vehicular traffic.

Electrocution causes 1 out of every _____ construction related deaths

At what depth is protection against cave-ins required?

Which type of soil is the least stable?

What degree of slope is required for type C soil?

If soil classification cannot be determined, it must be assumed to be soil type  _____  .

How is fissuring defined?

Which picture shows soil that is fissuring?

PICTURE A

PICTURE B

Many experienced excavators believe setting spoil piles (dirt removed from the excavation) 2 feet back from the trench is not enough distance, especially because of the risk presented during fissuring. Many believe the spoils pile should be set back at a horizontal distance that is twice the depth of the trench. Under this scenario, if a trench is 4 feet deep, the spoil pile should be located ____ feet from the edge of the trench. 

Fill in the blanks using the graphic below. 

A trench box (see an example in photo below) is an example of which type of trench protection?

Fill in the blank.

Fill in the blanks.